What is CVE-2023-53827?

CVE-2023-53827 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10, affecting Linux kernel versions from 3.5 onward and patched in 4.14.313, 4.19.281, 5.4.241 and others. CVE-2023-53827 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53827?

CVE-2023-53827 has a CVSS score of 8.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2023-53827?

Yes, CVE-2023-53827 has been patched. Fixed versions include 4.14.313, 4.19.281, 5.4.241 and others. If you are running Linux kernel 3.5 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53827 actively exploited?

CVE-2023-53827 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-53827

High

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp} Similar to commit d0be8347c623 ("Bluetooth: L2CAP: Fix use-after-free caused by l2cap_chan_put"), just use l2cap_chan_hold_unless_zero to prevent referencing a channel that is about to be destroyed.

Package Linux Kernel

Published 2025-12-09

Last modified 2026-08-04

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

8.8

out of 10

High

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected versions

Linux kernel versions 3.5 and later are affected. Fixed in 4.14.313, 4.19.281, 5.4.241, 5.10.178, 5.15.108, 6.1.25, 6.2.12, 6.3 and their respective stable series.

Affected from

≥ 3.5

Fixed in

✓ 4.14.313 4.14.x ✓ 4.19.281 4.19.x ✓ 5.4.241 5.4.x ✓ 5.10.178 5.10.x ✓ 5.15.108 5.15.x ✓ 6.1.25 6.1.x ✓ 6.2.12 6.2.x ✓ 6.3

References

8 total

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2023-53827

Severity High

CVSS score 8.8 / 10

CVSS version 3.1

Published 2025-12-09

Modified 2026-08-04

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53827?

CVE-2023-53827 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10 . It affects Linux kernel versions from 3.5 onward and has been patched in 4.14.313, 4.19.281, 5.4.241 and others. CVE-2023-53827 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53827?

CVE-2023-53827 has a CVSS score of 8.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2023-53827?

Yes. CVE-2023-53827 has been patched. Fixed versions include 4.14.313, 4.19.281, 5.4.241 and others. If you are running Linux kernel 3.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53827 actively exploited?

No. CVE-2023-53827 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.